Abstract: A system includes a switching assembly and a processor. The switching assembly is connected to multiple electrodes that are disposed on an expandable distal end of a catheter, and is configured to switch the electrodes between a position tracking system, an electrophysiological (EP) sensing module and a generator of an ablative power. The processor is configured to control the switching assembly to switch the electrodes.

Abstract: A medical apparatus includes a probe, which includes an insertion tube configured for insertion into a body cavity of a patient, and a distal assembly, which is connected distally to the insertion tube and includes a plurality of electrodes, which are configured to contact tissue within the body cavity. The apparatus further includes an electrical signal generator, which is configured to apply electrical pulses to a group of two or more of the electrodes with an amplitude sufficient to irreversibly electroporate the tissue contacted by the electrodes in the group, and a controller, which is coupled to measure a change in an electrical impedance between an electrode in the group and a further electrode as a result of application of the electrical pulses and to output a measure of ablation of the tissue responsively to the measured change in the electrical impedance.

Abstract: A method includes acquiring intracardiac unipolar signals and intracardiac bipolar signals at a given region of a heart of a patient. The unipolar signals are pruned by eliminating ones of the unipolar signals that correspond in time to respective bipolar signals. One or more unipolar signals are identified among the pruned unipolar signals, that are associated with far-field P-waves. Using the identified P-waves, a window of interest (WOI) is set on electrograms acquired in an atrium of the heart, and, using the electrograms having the set WOI, an electrophysiological (EP) map is generated, of the atrium indicative of atrial tachycardia (AT) tissue locations therein.

Abstract: The disclosed technology includes an electrode assembly comprising an electrode body comprising a top surface and a bottom surface. The electrode body can be configured to deliver ablative energy to tissue through at least the top surface. The electrode assembly can further include a coil disposed near the bottom surface. The coil can be configured to generate a voltage when subject to a magnetic field. The electrode assembly can include a member that is disposed near the coil and comprises a high-magnetic-permeability material.

Abstract: The disclosed technology includes a medical probe configured for mapping and ablation of tissue. The medical probe comprises an inner catheter shaft extending along a longitudinal axis and an ablation electrode disposed at a distal end of the inner catheter shaft. The ablation electrode can be configured to deliver ablative energy to tissue. The medical probe further includes an outer sleeve disposed at least partially around the inner catheter shaft and extending along the longitudinal axis and comprising a plurality of spines disposed at a distal end of the outer sleeve. Each spine of the plurality of spines can comprise a mapping electrode configured to detect electrophysiological signals. The outer sleeve can be configured to move axially along the inner catheter shaft to move the plurality of spines axially with respect to the ablation electrode.

Abstract: A catheter includes: a shaft for insertion into an organ of a patient, and first and second position sensors. The shaft includes: (a) an inner shaft, which is configured to be deflected relative to an axis of the shaft, and (b) an outer shaft, which is coupled to a distal tip of the catheter and is configured to be: (i) coaxially disposed around the inner shaft, (ii) deflected together with the inner shaft, and (iii) rotated about the axis relative to the inner shaft. The first position sensor is coupled to the distal tip and is configured to produce a first signal, and the second position sensor is coupled to the inner shaft, and is configured to produce a second signal.

Abstract: A medical instrument includes a shaft, multiple flexible spines and multiple electrodes. The shaft is configured for insertion into a body of a patient. The multiple flexible spines have respective first ends that are connected to a distal end of the shaft and respective second ends that are free-standing and unanchored. The spines are bent proximally such that the second ends are more proximal than the first ends. Each of the flexible spines includes a tensile layer configured to cause the flexible spine to bend proximally. The multiple electrodes are disposed over the flexible spines.

Abstract: A medical probe includes an insertion tube for insertion into a patient body, at least an arm, which is attached to a distal end of the insertion tube, at least a reference electrode coupled to the arm, and multiple electrodes, which are coupled to the arm, surround the reference electrode and are configured to sense electrical signals of body tissues that, when measured relatively to the reference electrode, are indicative of anatomical signals in the patient body.

Abstract: A method includes receiving an anatomical mapping that includes multiple measurements acquired at multiple respective locations within an organ of a patient. An estimated surface of the organ is computed based on the measurements. A three-dimensional (3D) shell of the organ, which extends inwards from the estimated surface of the organ and has a predefined thickness, is defined. A quality of the anatomical mapping is estimated based on the measurements whose locations fall within the 3D shell.

Abstract: A method comprising shaping and joining three loop members of a catheter is disclosed herein. The method includes coupling proximal ends of each loop member to a distal portion of an elongated shaft and overlapping the first loop member, the second loop member, and the third loop member at a common distal vertex such that when the first, second, and third loop members are unconstrained, at least one of the loop members is non-coplanar with one or both of the other loop members and when the shaft is manipulated to press the loop members to a planar surface, a majority of each loop member is moved to contact the planar surface.

Abstract: A catheter for electrophysiology applications is disclosed herein that includes a tubular member and an end effector. The end effector is coupled to a distal portion of the tubular member which as a cross-section intersecting first and second orthogonal planes extending along a longitudinal axis. The end effector includes first, second, and third loop members and has an unconstrained configuration in which the first and second loop members respectively define planar surfaces which each intersect the first and second orthogonal planes and the third loop member defines a planar surface that intersects only one of the first and second orthogonal planes.

Abstract: A system includes a processor and a display. The processor is configured to: (i) produce an electroanatomic (EA) map of a surface of the organ, the EA map specifying a propagation vector-field (PVF) indicative of propagation of an electrophysiological (EP) wave over at least the surface, (ii) select at least a region of the organ, (iii) calculate a gaussian integral of the PVF along a perimeter of at least a closed contour indicative of the selected region, and (iii) produce at the region, a tag indicative of the LAS, in case the calculated gaussian integral meets a criterion. The display is configured to display the EA map and at least the tag over the EA map.

Abstract: In one embodiment, a medical system includes a catheter configured to be inserted into a heart of a living subject, and including electrodes configured to capture electrical activity of the heart at respective position in the heart, a display, and processing circuitry configured to receive position signals from the catheter, and in response to the position signals compute the respective positions of the electrodes, generate an anatomical map responsively to respective ones of the computed positions, find an anatomical feature of the heart and a position of the anatomical feature responsively to the respective positions of, and electrical activity captured by, respective ones of the electrodes, automatically segment the anatomical map responsively to the found position of the anatomical feature, and render the anatomical map to the display.

Abstract: In one embodiment, a medical system includes a catheter configured to be inserted into a chamber of a heart of a living subject, and including catheter electrodes configured to contact tissue at respective locations within the chamber of the heart, a display, and a processing circuitry configured to receive respective signals from the catheter captured by respective ones of the electrodes, assess conformity of each of the respective signals to at least one signal characteristic, find a given one of the signals of a given one of the electrodes not conforming to the at least one signal characteristic for a given time period, and render to the display an indication that the given signal of the given electrode does not conform to the at least one signal characteristic for the given time period.

Abstract: A catheter ablation system includes: a catheter probe having distal end including: a temperature sensor; a plurality of irrigation holes; and an ablating electrode; a radiofrequency (RF) heating controller coupled to the catheter probe and configured to supply RF energy to the ablating electrode to control the ablating electrode to emit heat at a target power; an irrigation controller coupled to the catheter probe and configured to supply an irrigation fluid at a continuously adjustable irrigation flow rate through the catheter probe to exit through the irrigation holes; and an operating console having a processor and memory, the memory storing instructions that, when executed by the processor, cause the processor to control the irrigation controller to set the irrigation flow rate based on the target power and a target average temperature.

Abstract: A method includes, during arrhythmia occurrence, acquiring multiple sets of reference coronary sinus electrophysiological (CS-EP) signals with a first catheter in coronary sinus (CS) of a heart of a patient, while measuring multiple respective reference CS locations of the first catheter. One or more intra-cardiac electrophysiological (IC-EP) signals are acquired with a second catheter located in a cardiac chamber of the heart, while acquiring actual CS-EP signal with first catheter, and while measuring an actual CS location of first catheter. Using reference CS locations, reference CS-EP signal is identified whose reference CS location is nearest to actual CS location of the first catheter. A signal-stability measure between actual CS-EP signal and identified reference CS-EP signal is estimated.

Abstract: A flexible probe has an assembly in its distal end that includes a compressible spring, the compressible spring arranged in a helix having flat surfaces with at least one leg at each end of the spring. The compressible spring is configured to deform in response to a compressive force acting against the legs at the ends of the spring from pressure exerted on the distal tip when engaging a wall of the body cavity. The compressible spring further includes at least one flexible transmitter coil disposed on the flat surface at one end of the spring and at least one flexible receiver coil on the flat surface at the other end of the spring. The at least one of flexible receiver coil is configured to receive signals from the at least one flexible transmitter coil for sensing a position of the coils relative to each other.

Abstract: A system and method are disclosed. The system and method include obtaining respiration data of a patient via at least one sensor, obtaining probe location data for a probe positioned within a cavity, generating probe-cavity location data by compensating the respiration data from the probe location data, identifying periods when the probe is stable relative to a cavity boundary based on the probe-cavity location data, and capturing data based on generated probe-cavity location during identified periods to produce mapping.

Abstract: An apparatus includes a handle, a catheter, extending distally from the handle, an end effector extending distally from the catheter, a deflection assembly, and a load limiting assembly. The deflection assembly is configured to deflect the end effector away from a longitudinal axis of the catheter. The deflection assembly includes an input member and a translating assembly. The input member is configured to drive the translating assembly to deflect the end effector away from the longitudinal axis. The load limiting assembly is configured to decouple the input member from the translating assembly at a predetermined load such that the input member is inhibited from driving the translating assembly when the input member is decoupled by the load limiting assembly.

Abstract: A method includes, in a processor, receiving signals from (i) a first position sensor disposed on a shaft of a catheter, and (ii) a second position sensor disposed on a distal end of a sheath of the catheter. Based on the signals received from the first position sensor and the second position sensor, an event is detected in which an expandable distal-end assembly of the catheter is being withdrawn into the sheath while still at least partially expanded. A responsive action is initiated in response to detecting the event.